Londonderry, NH · Addition permit
Londonderry, NH addition permit checklist
6 required items. Read from the town's pages on 09/27/2026.
In the packet (4)
- Building permit application, completed, signed and dated Residential Building Permit Application
- Construction drawings, drawn to scale and dimensioned What Do I Need to Submit with My Application
- Energy code compliance form (EC-1 or equivalent) Required Paperwork to Apply for a Building Permit (New Dwelling)
- Structural details: framing, beams and headers Required Paperwork to Apply for a Building Permit (New Dwelling)
Only when it applies (2)
- Plot plan showing the work and distances to the lot lines (when Does the work change the building footprint or add floor area: yes) What Do I Need to Submit with My Application
- State permit for the site (driveway, shoreland or wetlands) (when Is any work within 100 feet of a wetland, stream or pond: yes) RSA Chapter 482-A Fill and Dredge in Wetlands